package cn.tedu.boot21.controller;

import cn.tedu.boot21.entity.User;
import cn.tedu.boot21.utils.DBUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

@Controller
public class UserController {

    @RequestMapping("/reg")
    @ResponseBody
    public String reg(User user) {
        //得到数据库连接
        try (Connection conn = DBUtils.getConn()) {
            String sql = "select id from user where username=?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1, user.getUsername());
            ResultSet rs = ps.executeQuery();
            if (rs.next()) {
                return "用户名已存在!";
            }
            String sql1 = "insert into user values(null,?,?,?)";
            ps = conn.prepareStatement(sql1);
            ps.setString(1, user.getUsername());
            ps.setString(2, user.getPassword());
            ps.setString(3, user.getNick());
            ps.executeUpdate();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return "注册成功!";
    }

    @RequestMapping("/login")
    @ResponseBody
    public String login(String username,String password){
        try (Connection conn = DBUtils.getConn()){
            String sql = "select password from user where username=?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1,username);
            //执行查询
            ResultSet rs = ps.executeQuery();
            if(rs.next()){//代表查询到了
                //得到查询到的密码
//                String pw = rs.getString(1);
//                if(pw.equals(password)){
                if(rs.getString(1).equals(password)){
                    return "登陆成功!";
                }else {
                    return "密码错误!";
                }
            }
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return "用户名不存在!";
    }

}
